CNC computer gongs usually use vacuum chuck because the workpiece has high requirements for surface smoothness, or when the fixture of CNC computer gong itself cannot clamp the workpiece well, it is a relatively cheap special fixture in CNC machine tools.
- Vacuum chuck used on CNC computer gongs: the vacuum chuck plays the role of fixture in CNC machining center. Some workpieces require high surface smoothness, so they can not use the fixture of common CNC computer gongs. At this time, the vacuum sucker can be put into use. However, we seldom use rubber vacuum cups in CNC computer gongs, but we use CNC vacuum cups more. The so-called CNC vacuum sucker is a kind of special vacuum sucker with vacuum generator and switch. The suction principle is the same as rubber vacuum chuck, which creates a vacuum environment to make the suction cup press on the workpiece under atmospheric pressure, but CNC vacuum chuck is the only one The vacuum environment is produced by the vacuum generator. The rubber vacuum chuck is a simple vacuum component, while the CNC vacuum sucker is like a large plate.
The computer gong machining of CNC machine tools is mainly used to process parts with complex shapes, but the structure of the fixtures used is often not complicated. The selection of fixture for CNC milling machine can be firstly determined according to the batch of production parts. For the single piece, small batch and heavy workload mold processing, the positioning and clamping can be realized directly on the machine table by adjusting, and then the position of the parts can be determined by setting the machining coordinate system.
- What is CNC computer gong vacuum sucker: vacuum sucker, also known as vacuum spreader, is one of vacuum equipment actuators. Generally speaking, it is the cheapest way to grab the product with vacuum sucker. There are various types of vacuum suction cups. Rubber suction cups can be operated at high temperature. The suction cups made of silicone rubber are very suitable for grasping products with rough surface, while those made of polyurethane are very durable. In addition, in the actual production, if the sucker is required to have oil resistance, polyurethane, nitrile rubber or polymer containing vinyl can be used to make sucker. Generally, in order to avoid scratches on the surface of the products, it is better to choose the suction cup with bellows made of nitrile rubber or silicone rubber. The material of suction cup is made of nitrile rubber, which has large breaking force, so it is widely used in various vacuum holding equipment.
Machining is a process of changing the overall dimension or performance of the workpiece with processing machinery. According to the temperature state of the workpiece to be processed, it can be divided into cold working and hot working. Generally, it is processed at normal temperature and does not cause chemical or physical changes of the workpiece, which is called cold working. Generally, the processing above or below the normal temperature will cause the chemical or physical phase changes of the workpiece, which is called thermal processing. Cold working can be divided into cutting and pressure machining according to the difference of processing methods. Heat treatment, forging, casting and welding are common in hot working.
The machines needed for machining include digital display milling machine, digital display molding grinder, digital display lathe, EDM machine, universal grinder, machining center, laser welding, middle wire feeding, etc., which can be used for turning, milling, planing and grinding of precision parts. Such machines are good at turning, milling, planing and grinding of precision parts, and can process various irregular shape parts with the machining accuracy of 2 μ M
In addition, cold and heat treatment is often used in assembly. For example, during the assembly of bearing, the inner ring is often cooled in liquid nitrogen to shrink its size, the outer ring is heated properly to enlarge its size, and then it is assembled together. The outer ring of the wheel of the train is also sheathed on the substrate by heating, and the bonding firmness can be ensured when it is cooled (this method is still applied to the transfer process of some parts).
Mechanical processing includes: filament power winding, laser cutting, heavy processing, metal bonding, metal drawing, plasma cutting, precision welding, roll forming, sheet metal bending, die forging, water jet cutting, precision welding, etc.
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